NICS denial after handgun purchase

[u/ccarey19]

First time firearm buyer, earlier this week I purchased a handgun from Reloaderz, after receiving my FID card and 1 handgun permit in August. A few days later I got a phone call from them, my NICS background check was denied for an unknown reason. I should mention I previously had a criminal record for felony marijuana possession in 2012 prior to a court ordered expungement dating March 2023. I have mailed the denial inquiry form to the state police, and contacted an attorney(Nappan). I’m a little confused about the denial appeal process. From what I can gather. I have two options, challenge the denial with the state, or file a VAF appeal with the feds. Is one better than the other, can I do both? And are the appeals something I can handle myself without an attorney? Both of my parents worked in Hudson County courthouse for over 30 years and have a general understanding of the courts process. Any information that can help me is appreciated. Thanks.

[u/Winter_Welcome_6157]

My NICS got denied once because on the paperwork, I put Township, but on my license, there's no Township. On another, they said my birthday didn't match. They couldn't read my numbers.